DE102006049773A1 - Modular installation switching device - Google Patents

Abstract

The invention relates to a service switching device (1) having a housing (3), with a front front side (4), rear front side (5, 5 '), front (7, 5) connecting the front and rear front sides (4, 5, 5') , 7 ') and rear (8, 8') narrow sides, with lateral broad sides (9), a fastening side (6), with at least one in a terminal connection space (18) in the interior of the housing (3) fixed in position, screwless terminal connection (10) for connecting connecting conductors (14) by clamping with a compressive spring acting on the terminal conductor ends (16) and this in a window-like recess (116) of a busbar (102) clamped clamping spring (12) corresponding to the number of connecting terminal corresponding number of part springs (13a, 13b). The housing wall in the region of the terminal connection (10) has a number of terminal openings (23, 25, 26, 27) corresponding to the number of terminal leads for each terminal lead, and each terminal opening (23, 25, 26, 27) is a partial spring (13a , 13b) so assigned that each terminal conductor with the other connecting conductors against a common clamping edge (120) only a window-like recess (116) can be clement.

Description

The The invention relates to a modular service switching device with a Casing, with a front and back front, with the front and back rear front sides connecting front and rear narrow sides, with lateral broadsides, with a fastening side, with at least a fixed in a terminal connection space in the interior of the housing, screwless terminal connection for connecting connecting leads Clamping with a compression spring on the connection conductor ends acting and this in a window-like recess one Busbar clamped clamping spring, which is one of the number to be connected connecting conductor corresponding number of part springs, according to the preamble of claim 1.

at a generic service switching device it can For example, be a circuit breaker, which inside his case at least one contact point comprises at least one fixed and a movable contact piece over which one leading from an input terminal to an output terminal Rung opened and can be closed. The contact point will be in general operated by a derailleur with Verklinkungsstelle. Such a circuit breaker may further comprise triggering devices, For example, a thermal release or a magnetic Instantaneous release, when a short circuit or fault current occurs in the current path act on the contact point or the rear derailleur, so that the contact point opened becomes.

For the installation width of miniature circuit breakers in Germany has a so-called standard module width enforced by 17.5 mm.

at a generic service switching device it can but also be an auxiliary switch for attachment to a circuit breaker. Such add-on auxiliary switches are switched simultaneously with the main poles and are used to switch off or on of electrical circuits. You can for many Serve purposes, for example, for switching optical or acoustic Signals indicating the switching state of the main circuit. auxiliary switch can in separate current paths have multiple auxiliary contacts, which from each other are galvanically isolated, and to the entrance and exit side one or two connection conductors can be connected in each case. The Surface-mounted auxiliary switches usually require only a width of half Standard module width, So about 8.75 mm.

to Connection with external connection conductors be in generic service switching devices screw terminals used. There are also known einmodulige devices in which the downstream side screwless terminal connections be used. As clamping elements can thereby plug terminals or Spring-loaded terminals are used. In principle, these can be connected by Substantially simplify connection conductors, as in the assembly is not more with a screwdriver a screw needs to be attached, but simply plug the connecting lead into the terminal can, he is then held by the terminal element itself. If more than one connection conductor connected by means of a clamping element should be, so each of the connection conductors, without the other to be influenced, plugged in and also removed again.

From the EP 1 575 130 a terminal connection is known in which a plurality of insertion openings are present in a contact frame. The clamping spring is divided at its free end by one or more slot-shaped recesses in a number of plug openings corresponding number finger-like extensions. Each of the extensions is guided through in each case one of the insertion openings and in each of the insertion openings of one of the extensions a conductor can be clamped. As a result, each connection conductor can be inserted and removed without affecting the other connection conductors. For a current connection from a clamped connection conductor to an outgoing conductor inside the device, a terminal connection must comply with the EP 1 575 130 only a narrow bridge on the contact frame available. The contact resistance from the clamped connecting conductor to the further electrical outgoing conductor into the switching device is correspondingly high. Since a separate connection window, separated by a crossbar, is available for each connection conductor to be clamped, the terminal connection is made in accordance with the EP 1 575 130 so wide that it does not fit into switching devices with only half the standard module width.

It Therefore, the object of the present invention, a generic service switching device with screwless Klemmanschlüssen to further improve, so it also constructed as a semi-modular device with terminal connections can be.

The object is achieved by a generic service switching device with the characterizing features of claim 1. According to the invention, the housing wall in the region of the terminal connection one of the number to be connected terminal conductor corresponding number of connection openings for each connection conductor, and each connection opening is associated with a part spring so that each connection conductor with the other connecting conductors against a common terminal edge only a window-like recess can be clamped.

Of the Advantage of the installation switching device according to the invention consists now in that the terminal connection can be built very narrow, because it is only a window-like recess for receiving the provided to be clamped connection conductor. By the separated connection openings in the housing wall and the associated separate part springs of the clamping spring the separation and leadership take place the connection conductor. So can the connection conductors independent be introduced from each other in the one, common window-like recess.

In In a particularly advantageous embodiment, each connection opening is a introduction channel to the leadership at this connection opening to be connected Associated connection conductor. This will guide each of the connection conductors without influencing the other connecting conductor or conductors in one, common window-like recess further improved, too if the case has only half a module width.

The connection openings each terminal connection space can advantageously at least an engagement opening for a operating tool to operate be associated with at least one of the part springs of the clamping spring. This will make it possible once introduced To remove connecting conductor again, namely by the Remove the part spring bent so far by means of the operating tool is that the connection conductor can be pulled out. Also during insertion of leads with flexible conductor ends is by means of Operating tool the part spring first open, and after insertion the flexible conductor end released again.

According to one very advantageous embodiment can an inventive switching device also two or more terminal connections have in two or more terminal connection spaces. The two or more terminal connection rooms are then in a common plane parallel to the broadside and in height above the attachment side shifted against each other in the housing arranged. In this way, it is possible to connect several terminal connections in one Installation switch according to the invention to accommodate so that they are electrically isolated from each other.

advantageously, is then the first terminal terminal associated with a connection opening in a rear front, and a second or further terminal connection associated connection openings are in the adjoining the rear front narrow side of the housing intended. In this way it becomes possible the limited space on the housing surface, in particular for semi-modular devices, advantageous to exploit that the terminals sufficient are far apart from each other, even with possibly occurring higher voltages between to be electrically isolated from each other.

Regarding one advantageous embodiment of a service switching device according to the invention comprises the busbar of the terminal connector has a terminal end and a following drainage area. The window-like recess in the busbar has a supporting edge and one of the support edge opposing Clamping edge at the transition of the connection end in the discharge area. The Klemmfe has the a support leg on, with which they are at the supporting edge supported the busbar is. On the support leg includes a bow piece and one along it Slotted clamping leg, so that two independently clampable part springs arising from a connection opening are assigned, and thereby each a conductor end between a part spring and the clamping edge can be clamped as an abutment.

The Conductor end is in this case advantageously from the side of the elbow piece ago can be inserted into the window-like recess.

According to one further advantageous embodiment has the busbar approximately in a U-shape, wherein the terminal end forms a U-leg, and the discharge area by a transverse web and the other U-legs is formed.

At the free end of the other U-leg can be a raised edge for fixing be provided further conductor. At the free end of the other U-leg can be formed a discharge. It can the Conduction rail advantageously approximately perpendicular to the other U-leg run, and the clamping edge opposite side of the connection end can be supported on the discharge rail be. This results in an even more compact and stable construction the terminal connection, even with half-module housing width, possible.

Further advantageous embodiments and improvements of the invention and Further advantages can be found in the further subclaims.

Based of the drawings, in which an embodiment of the invention are shown, the invention and further advantageous Embodiments and improvements of the invention explained in more detail and to be discribed.

It demonstrate:

1 : A schematic view of an installation switching device according to the invention with half a module width, as well

2 : An enlarged, schematic view of the terminal connections of the service switching device according to 1 ,

In the figures are the same or equivalent components or elements each provided with the same reference numerals, even if they are in various embodiments are designed in a slightly modified form.

The 1 shows an inventive installation switching device 1 with an insulating material housing 3 which has a half module width. The insulating material housing 3 has a front front 4 , rear fronts 5 . 5 ' , a fastening or connection side 6 , on which a recess is provided with a nose, by means of which the service switching device 1 can be snapped on a standard profile support rail, for example on a top hat rail, next to another service switching device, as well as broadsides 9 , of which in the view 1 only one is shown. The back fronts 5 . 5 ' are on the back narrow sides 8th . 8th' with the attachment side 6 connected, and the front front 4 is over front narrow sides 7 . 7 ' with the back fronts 5 . 5 ' connected.

In the back front 5 are, near the transition to the front narrow side 7 , lying side by side two connection openings 23 . 25 introduced for the introduction of connecting conductors. In the 1 is an example of a connection conductor 14 in the connection opening 23 introduced presented. The two connection openings 23 . 25 are located in the interior of the housing, in the 1 invisible, first terminal connection space 18 with a first screwless terminal connection 10 (please refer 2 ). Near the two connection openings 23 . 25 is a rectangular engagement opening 218 introduced into the housing wall, here in the rear front 5 , This opens a first intervention channel 219 , through which with a screwdriver as an operating tool in the first terminal connection space 18 the two connection openings 23 . 25 assigned clamping spring 12 can be operated.

In the back narrow side 8th are two more adjacent ports 26 . 27 brought in. These are a second, also inside the case 3 located in the 1 invisible, terminal connection compartment 18 ' with a screwless terminal connection 10 ' (please refer 2 ). In the back front 5 is, near the connecting edge with the rear narrow side 8th , a second engagement opening 218 ' introduced, which by one inside the housing approximately along the rear narrow side 8th towards the second clamping spring 12 ' to extending second engagement channel 219 ' for an operating tool access to the second terminal connection 10 ' opened for its operation.

It is now the 2 considered. Each of the two terminal connections 10 respectively 10 ' is a so-called plug-in terminal connection. The reference numbers without apostrophe refer to the upper terminal connection 10 , the reference numbers with apostrophe refer to the lower terminal connection 10 ' , The description of the terminal connections is given by way of example using the example of the upper terminal connection 10 , The lower terminal connection 10 ' is essentially identical, and at the terminal connection 10 described elements contribute to the terminal connection 10 ' the same reference numbers, each extended with an apostrophe.

The terminal connection 10 includes a busbar 102 and a clamping spring 12 , The terminal connection 10 lies on one inside the case 3 formed projection, which is not shown here, and is by means of webs and pins, of which here only one pin 106 is shown, in a conventional manner in the terminal connection space 18 fixed in position. The busbar 102 includes a connection end 112 and a subsequent derivation area 114 , At the connection end 112 she has a window-like recess 116 with a supporting edge 118 and a clamping edge opposite the supporting edge 120 on. The clamping edge 120 is located at the junction of the terminal end 112 in the discharge area 114 and is from the back narrow side 8th farther away than the supporting edge 118 ,

The clamping spring 12 has a support leg 212 on, with which they are at the supporting edge 118 the busbar 102 is supported. The support can be made so that the support leg 212 at its free end a raised edge (not shown), with which he the supporting edge 118 partially for the purpose of supporting.

On the support leg 212 closes a bow piece 214 and a clamping leg 216 at. The stripped conductor end 16 a connection conductor 14 is through the connection opening 23 inserted through and one of the connection opening associated with insertion channel 28a through from the side of the elbow 214 forth in the window-like recess 116 introduced. It is thus between the clamping leg 216 and which functions as an abutment renden clamping edge 120 clamped. The free end of the clamping leg 216 engages the window-like recess 116 ,

The clamping leg 216 is along a slot 11 slotted longitudinally, so that two independently clampable part springs 13a . 13b arise, with which independently of each other two connection conductors on the same clamping edge 120 can be clamped. The two connecting conductors are each provided with their own connection opening 23 . 25 plugged and guided in separate insertion, so that the separation of the connecting conductors through the connection openings and the insertion takes place.

The busbar 102 has approximately a U-shaped in the basic form, wherein the terminal end 112 forms the first U-leg, and the discharge area 114 through a crossbar 220 and the second U-leg 222 is formed. At the free end of the second U-leg 222 is an upstand 224 appropriate. At this upstand 224 Further connection conductors can be attached with which the terminal connection 10 is connected to other modules within the switchgear housing. In particular, the connection conductors can be welded, brazed, screwed or riveted to this upstand.

An illustrated design of the busbar has the advantage that when inserting and loosening the connection conductor on the terminal connection 10 acting forces are absorbed by this as a closed system, and thus forces on other elements of the service switching device, such as the housing can be reduced.

The busbar 102 For example, as a stamped and bent part in very large numbers can be produced inexpensively and easily and in a wide variety of shapes.

If a connecting conductor with a rigid conductor end is to be introduced through a connection opening into the terminal connection, then the rigid connection conductor presses the partial spring assigned to the connection opening from the clamping edge 120 so far away that the conductor end through the window-like recess 116 passes through and finally by the opposing force of the part spring against the clamping edge 120 is pressed. If a second connection conductor is inserted through the second connection opening, then it bends the partial connection opening associated with the partial spring, and is also by its restoring force to the clamping edge 120 pressed. Mechanically, however, the two connection conductors do not influence each other.

If connecting conductors are to be introduced with a flexible conductor end, it is first by an actuating tool through the engagement channel 219 and the engagement opening 218 through the corresponding part spring bent, so that then the flexible conductor end without encountering resistance can be performed. When the operating tool is then removed, the partial spring presses the flexible conductor end against the clamping edge due to its restoring force 120 ,

To avoid two leads with flexible conductor ends unaffected by each other at the terminal connection 10 attach, the engagement channel 219 be divided into two by a central web, so that two separate sub-engagement channels arise, each of which is associated with one of the two sub-springs and the actuation allows only its associated part spring. This variant is not shown in the figures.

Accordingly, the procedure for removing one of the inserted and clamped conductor ends. First, by means of the actuating tool through the engagement channel 219 through the part spring bent back so that the conductor ends are released and can be pulled out.

By Use of a designed as described terminal connection is it possible for the first time also in a service switching device with only half a module width to provide a screwless terminal connection, with which several connecting conductors independently can be clamped together and pulled out again.

In the 2 is still an arrangement of two terminal connections 10 . 10 ' in two terminal connection spaces 18 . 18 ' shown switching device in an installation according to the invention. The second terminal compartment 18 ' with the second terminal connection 10 ' is located near the rear narrow side 8th , The connection openings assigned to it 27 and 26 are in the back narrow side 8th brought in. The two connection openings 27 . 26 associated insertion channels 28 ' . 28a ' run diagonally to the rear narrow side 8th on the clamping leg 216 ' the clamping spring 12 ' to. As a result, a guide of the connection conductor is oblique to the rear narrow side 8th guaranteed.

This is advantageous for the accessibility of the connection openings 27 . 26 when an inventive installation switching device is mounted in a series with other installation switching devices on a standard profile support rail, for example in a distributor housing. Then in fact has the rear narrow side 8th For example, upwards, and it is advantageous if the connection leads to the An connection openings 27 . 26 at an acute angle at an angle to the rear narrow side 8th can be introduced.

The second terminal connection 10 ' is otherwise the same structure as the first terminal connection 10 inserted in the housing so that the clamping leg 216 ' the clamping spring 12 ' to the insertion channels 28a ' . 28 ' points. This results in an approximately mirror-image arrangement of the two terminal connections 10 . 10 ' in the case.

Due to the offset of the two terminal connections 10 . 10 ' in height above the attachment side 6 is ensured that the two terminal connections 10 . 10 ' have a sufficiently large distance from each other, so that an electrical insulation between them is guaranteed in each operating state of the service switching device.

For example, the terminal connection 10 for connecting one phase and the terminal connection 10 ' be provided for the connection of the neutral conductor in a circuit breaker or an auxiliary switch with half the module width.

The second terminal connection 10 ' assigned intervention channel 219 ' runs in the embodiment according to 2 from the back front 5 from approximately along the rear narrow side 8th on the clamping spring 12 ' to. This has the advantage that the access to the operating tool for both terminal connections from the same side of the device is made.

Of course, the second engagement channel could 219 ' also on the back narrow side 8th near the two connection openings 27 . 26 be attached, and there from the engagement hole 218 ' for example, also obliquely inwards on the clamping leg 216 ' the clamping spring 12 ' clues. However, it is also a variant conceivable in which the engagement channel 219 ' perpendicular to the rear narrow side 8th runs.

Otherwise it is the invention of course not to the embodiment shown limited. In particular, you can also more than two terminal connections with spring clips according to the invention arranged in an installation switching device according to the invention be.

1

Service switching device

3

casing

4

Front front

5, 5 '

Rear front

6

mounting side

7, 7 '

Front narrow side

8th, 8th'

Rear narrow side

9

broadside

10 10 '

screwless terminal connection

11 11 '

slot in clamping legs

12 12 '

clamping spring

13a, 13b, 13a ', 13b'

partial spring

14

connecting conductors

16

stripped Connection wire end

18 18 '

Terminal chamber

23

port opening

25

port opening

26

port opening

27

port opening

28 28a, 28 ', 28a'

introduction channel

102 102 '

conductor rail

106 106 '

spigot

112 112 '

terminal end

114 114 '

discharge area

116

window-like recess

118 118 '

supporting edge

120 120 '

clamping edge

212 212 '

support legs

214

elbow

216 216 '

clamping leg

218 218 '

engagement opening

219 219 '

engagement channel

220

crosspiece

222

second U-leg

224

backsplash

Claims (12)

Modular installation device ( 1 ) with a housing ( 3 ), with a front side ( 4 ), rear front ( 5 . 5 ' ), with the front and rear fronts ( 4 ; 5 . 5 ' ) connecting front ( 7 . 7 ' ) and rear ( 8th . 8th' ) Narrow sides, with lateral broadsides ( 9 ), a fastening side ( 6 ), with at least one in a terminal compartment ( 18 ) inside the housing ( 3 ) fixed in position, screwless terminal connection ( 10 ) for connecting connecting conductors ( 14 ) by clamping with a compression spring on the terminal conductor ends ( 16 ) and these in a window-like recess ( 116 ) of a busbar ( 102 ) clamping spring ( 12 ), one of the number of connecting leads corresponding number of part springs ( 13a . 13b ), characterized in that the housing wall in the region of the terminal connection ( 10 ) a number of connection openings corresponding to the number of connection leads to be connected ( 23 . 25 ; 26 . 27 ) each having a connection conductor and each connection opening ( 23 . 25 ; 26 . 27 ) of a part spring ( 13a . 13b ) is assigned so that each connecting conductor by a part spring ( 13a . 13b ) against a connecting edge common clamping edge ( 120 ) only a window-like recess ( 116 ) can be clamped. Installation switching device according to claim 1, characterized in that each connection opening ( 23 . 25 . 26 . 27 ) an insertion channel ( 28 . 28a . 28 ' . 28a ' ) is assigned to guide the connection conductor to be connected to this connection opening. Installation switching device according to one of the preceding claims, characterized in that at least two terminal connections ( 10 . 10 ' ) in at least two terminal connection spaces ( 18 . 18 ' ) in a common plane parallel to the broadside ( 9 ) and in the height above the attachment side ( 6 ) shifted against each other in the housing ( 3 ) are arranged. Installation switching device according to one of the preceding claims, characterized in that the connection openings ( 23 . 25 ; 26 . 27 ) of each terminal connection space ( 18 . 18 ' ) at least one intervention openings ( 218 . 218 ' ) is assigned for an actuating tool for actuating a clamping leg of the clamping spring. Installation switching device according to one of the preceding claims, characterized in that the a first terminal closure ( 10 ) associated connection openings ( 23 . 25 ) in a rear front ( 5 ) and a second terminal connection ( 10 ' ) associated connection openings ( 27 . 26 ) in the at this rear front ( 5 ) subsequent rear narrow side ( 8th ) of the housing ( 3 ) are provided. Installation switching device according to one of the preceding claims, characterized in that the housing ( 3 ) has a half standard module width. Installation switching device according to one of the preceding claims, wherein - the busbar ( 102 ) of the terminal connection ( 10 ) a connection end ( 112 ) and a subsequent derivation area ( 114 ), - the window-like recess ( 116 ) in the busbar ( 102 ) a supporting edge ( 118 ) and one of the supporting edge ( 118 ) opposite clamping edge ( 120 ) at the junction of the terminal end ( 112 ) into the derivation area ( 114 ), - the clamping spring ( 12 ) a supporting leg ( 212 ), with which they at the support edge ( 118 ) of the busbar ( 102 ) is supported, and - to the supporting leg ( 212 ) a bow piece ( 214 ) and a longitudinally slotted clamping leg ( 216 ), so that two independently clampable part springs ( 13a . 13b ), each having a connection opening ( 23 . 25 ) and one conductor end ( 16 ) between a part spring ( 13a . 13b ) and the clamping edge ( 120 ) can be clamped as an abutment. Installation switching device according to claim 7, characterized in that the conductor end ( 16 ) from the side of the elbow ( 214 ) ago in the window-like recess ( 116 ) is insertable. Installation switching device according to claim 8, characterized in that the busbar ( 102 ) has approximately a U-shape, wherein the terminal end ( 112 ) forms a U-leg, and the derivative region ( 114 ) by a crosspiece ( 220 ) and the other U-legs ( 222 ) is formed. Installation switching device according to claim 9, characterized in that at the free end of the other U-leg ( 222 ) an upstand ( 224 ) is provided for securing further current conductors. Installation switching device according to one of the preceding claims, with one or more output side arranged screwless terminal connections and one or more access side arranged screw terminals. Installation switching device according to one of claims 1 to 10, with one or more leaving side and one or more access-side arranged screwless terminal connections.